<?php

/*
 * Copyright 2008 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#namespace tehframework\annotations\parsers\processors;

#use tehframework\annotations\parsers\ParserException;
#use tehframework\annotations\parsers\state\ParserState;
#use tehframework\annotations\parsers\state\StateParser;
#use tehframework\annotations\parsers\state\StateProcessor;

class TagProcessor extends StateProcessor
{
	/**
	 * @param  char $token
	 * @param  StateParser $parser
	 * @throws ParserException
	 */
	public function process($token, StateParser $parser)
	{
		if (!ctype_alpha($token))
		{
			throw new ParserException(sprintf(
				'Tag name should begin with alphabetic char, got [%s].', $token
			));
		}
		
		$parser->changeState(ctype_upper($token)
			? ParserState::ANNOTATION_NAME : ParserState::TAG_NAME, $token
		);
	}
}